package com.webserver_v3.controller;

import com.webserver_v3.entity.User;
import com.webserver_v3.http.HttpServletRequest;
import com.webserver_v3.http.HttpServletResponse;

import java.io.*;
import java.net.URISyntaxException;

public class UserController {

    private static File userDir;

    static {
        userDir = new File("./users");
        if (!userDir.exists()){
            userDir.mkdirs();
        }
    }
    public void reg(HttpServletRequest request, HttpServletResponse response){
        String username = request.getParameters("username");
        String password = request.getParameters("password");
        String nickname = request.getParameters("nickname");
        String ageStr = request.getParameters("age");

        if ( username==null||username.isEmpty()||
            password==null||password.isEmpty()||
            nickname==null||nickname.isEmpty()||
            ageStr==null||ageStr.isEmpty()|| !ageStr.matches("[0-9]+")
        ){

            response.sendRedirect("/reg_info_error.html");
            return;
        }
        System.out.println(username+","+password+","+nickname+","+ageStr);
        int age = Integer.parseInt(ageStr);
        User user = new User(username,password,nickname,age);
        File file = new File(userDir,username+".obj");
        if (file.exists()){
            response.sendRedirect("/have_user.html");
            return;
        }

        try(
                FileOutputStream fos = new FileOutputStream(file);
                ObjectOutputStream oos = new ObjectOutputStream(fos);
                ) {

            oos.writeObject(user);
            response.sendRedirect("/reg_success.html");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    public void login(HttpServletRequest request,HttpServletResponse response){
        System.out.println("开始处理登录...");
        String username = request.getParameters("username");
        String password = request.getParameters("password");

        System.out.println(username+","+password);
        //验证用户名和密码
        if (username==null||username.isEmpty()||
                password==null||password.isEmpty()
        ){
            response.sendRedirect("/login_info_error.html");
            return;
        }
        File file = new File(userDir,username+".obj");
        if(file.exists()){//用户名是否存在(是否为一个注册用户)
            try (

                    FileInputStream fis = new FileInputStream(file);
                    ObjectInputStream ois = new ObjectInputStream(fis);
            ){
                User user = (User)ois.readObject();//读取回来的是注册用户信息
                //比较登录的密码和该注册用户的密码是否一致
                if(user.getPassword().equals(password)){
                    //登录成功
                    response.sendRedirect("/login_success.html");
                    return;
                }
            } catch (IOException | ClassNotFoundException e) {
                e.printStackTrace();
            }
        }
        response.sendRedirect("/login_fail.html");
    }
}
